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WindowServer: Add initial support for rendering on multiple screens

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This allows WindowServer to use multiple framebuffer devices and
compose the desktop with any arbitrary layout. Currently, it is assumed
that it is configured contiguous and non-overlapping, but this should
eventually be enforced.

To make rendering efficient, each window now also tracks on which
screens it needs to be rendered. This way we don't have to iterate all
the windows for each screen but instead use the same rendering loop and
then only render to the screen (or screens) that the window actually
uses.
This commit is contained in:
Tom 2021-06-13 06:16:06 -06:00 • committed by Andreas Kling
parent 499c33ae0c
commit 4392da970a
42 changed files with 1127 additions and 563 deletions
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19
Userland/Services/WindowServer/Window.h
View file

@ -14,6 +14,7 @@
#include <LibGfx/DisjointRectSet.h>
#include <LibGfx/Rect.h>
#include <WindowServer/Cursor.h>
#include <WindowServer/Screen.h>
#include <WindowServer/WindowFrame.h>
#include <WindowServer/WindowType.h>
@ -97,7 +98,7 @@ public:
void set_fullscreen(bool);
WindowTileType tiled() const { return m_tiled; }
void set_tiled(WindowTileType);
void set_tiled(Screen*, WindowTileType);
bool set_untiled(Optional<Gfx::IntPoint> fixed_point = {});
bool is_occluded() const { return m_occluded; }
@ -139,7 +140,8 @@ public:
{
m_alpha_hit_threshold = threshold;
}
Optional<HitTestResult> hit_test(const Gfx::IntPoint&, bool include_frame = true) const;
Optional<HitTestResult> hit_test(const Gfx::IntPoint&, bool include_frame = true);
int x() const { return m_rect.x(); }
int y() const { return m_rect.y(); }
@ -159,7 +161,7 @@ public:
void set_rect(int x, int y, int width, int height) { set_rect({ x, y, width, height }); }
void set_rect_without_repaint(const Gfx::IntRect&);
bool apply_minimum_size(Gfx::IntRect&);
void nudge_into_desktop(bool force_titlebar_visible = true);
void nudge_into_desktop(Screen*, bool force_titlebar_visible = true);
Gfx::IntSize minimum_size() const { return m_minimum_size; }
void set_minimum_size(const Gfx::IntSize&);
@ -260,7 +262,7 @@ public:
void start_minimize_animation();
void end_minimize_animation() { m_minimize_animation_step = -1; }
Gfx::IntRect tiled_rect(WindowTileType) const;
Gfx::IntRect tiled_rect(Screen*, WindowTileType) const;
void recalculate_rect();
IntrusiveListNode<Window> m_list_node;
@ -319,6 +321,14 @@ public:
WindowStack const* outer_stack() const { return m_outer_stack; }
void set_outer_stack(Badge<WindowStack>, WindowStack* stack) { m_outer_stack = stack; }
const Vector<Screen*, default_screen_count>& screens() const { return m_screens; }
Vector<Screen*, default_screen_count>& screens() { return m_screens; }
void did_construct()
{
frame().window_was_constructed({});
}
private:
Window(ClientConnection&, WindowType, int window_id, bool modal, bool minimizable, bool frameless, bool resizable, bool fullscreen, bool accessory, Window* parent_window = nullptr);
Window(Core::Object&, WindowType);
@ -344,6 +354,7 @@ private:
Gfx::IntRect m_rect;
Gfx::IntRect m_saved_nonfullscreen_rect;
Gfx::IntRect m_taskbar_rect;
Vector<Screen*, default_screen_count> m_screens;
Gfx::DisjointRectSet m_dirty_rects;
Gfx::DisjointRectSet m_opaque_rects;
Gfx::DisjointRectSet m_transparency_rects;